Typewriting machines – Including interposed inking device for record-medium – Including mechanism for shifting ribbon laterally at...
Patent
1984-05-07
1986-08-19
Wright, Jr., Ernest T.
Typewriting machines
Including interposed inking device for record-medium
Including mechanism for shifting ribbon laterally at...
400208, 400212, 400225, 400227, 4002272, 400232, B41J 3354, B41J 3356
Patent
active
046066616
ABSTRACT:
A method of and apparatus for proportional ribbon (23) tracking on a printer (20), the printer (20) including a carrier (30) upon which implements of printing, for example the printwheel (25), ribbon (23) and hammer (28) are all mounted for translation opposite a platen (21). Ribbon lift mechanism is provided for effecting elevation of a ribbon (23) to multiple predetermined positions or tracks (1-10) (FIG. 3B) intermediate a printwheel (25) and a platen (21) so that indicia or character may be printed on print receiving medium (22) held thereby. In essence, an input means (11) receives a character to be printed. The microprocessor (13), in conjunction with the ROM (15), characterizes the character in accordance with a predetermined plurality of characteristics. In accordance with ribbon lift and feed algorithms, a particular characteristic of the character to be printed is added to a position on the ribbon upon which at least one prior character has been printed. In this manner a new print position is determined. Thereafter, the new track print position is outputted to the ribbon lift and feed means for effecting elevation of said ribbon (23) to one of a multiple of predetermined positions to thereby approximately maximize the number of predetermined positions of said ribbon with characters thereon which may be printed without character overlap.
REFERENCES:
patent: 3401783 (1968-09-01), Norwood et al.
patent: 3444979 (1969-05-01), Francisco
patent: 3548994 (1970-12-01), Hudson
patent: 3613857 (1971-10-01), Thevis et al.
patent: 4247210 (1981-01-01), Kacmarcik et al.
patent: 4297043 (1981-10-01), Dargatz
patent: 4302118 (1981-11-01), Schaefer
patent: 4329072 (1982-05-01), Kacmarcik
patent: 4347007 (1982-08-01), Schaefer
patent: 4397575 (1983-08-01), Aldrich
patent: 4471283 (1984-09-01), Presley
Aldrich Charles S.
Booth James R.
Schuller William M.
Young Lloyd P.
Dick William J.
International Business Machines - Corporation
Wright, Jr. Ernest T.
LandOfFree
Proportional vertical and horizontal ribbon tracking for impact does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Proportional vertical and horizontal ribbon tracking for impact , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Proportional vertical and horizontal ribbon tracking for impact will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-391838